X  x x x x



v '3 AVAILABLE 630W (No Model.)

* G. CO NKLINGM FEEDING MECHANISM FOR MAGNETIC SEPABATORS .N0.-517 ,734.'7 I atenped n-a 1-894.

, W/TNESSES w MWZM ATTORNEY i5 following specification and claims, and.illnsv accompanying drawings, in

belt or a magnetic separator.

, l This invention 1 c 'UNITED STATES,-

i ennnon ooNKLnve, or, GLENs'FALLs, NEWYORK.

Planning hdCHA-NISM FOR MAGN we sEPARAToRs] I srncl-mcnrzolvrbrmin grt0f Letters Patent 5173a, Medias a, 1394.

' Ap ninm firearm 2.5, 1:891.

1'6 ail whom it may c'oa cemi' "-Be itknown thatLGURDONOONKLING, acitizen'ot the United Statesresidingat Glens; Falls, in the countyol?Warren andState of' New York, have invented new and useful Improvementsin Feeding Mechanism for Mag- .netic Separatorspof which thefollowingis' a specification bm thatclass of. devices known asmagneticore separators, and more particnlarlyto the feed ing, mechanismthereof,wherein' the massflto be separated is fed upon a'beltforcc'n'veyer which carries it through the magnetic field,-

said improvements being pointed cut in" the trated in the Figure I.represents-a vertical section of 'a magnetic separator of the type ofthat described in Letterslatent No. 383,868, granted to me June 5,1888.Fig. 2 is a plan or tnp View. Fig. 3 is a symbolicrepresentation of ra'stationary hopper discharging its contents 5 through a vertical tubeof prescribed length into an adjustable inclincdi trough from they lowerand oi'which"thecrnshed ore is dis In efiecting the'magnetic separationof'iron particles from dry crushed oreby means of a belt which carriesthe crushed ore through the magnetic" field, it is desirable that thecrushed ore be thinly spread upon 'said beltf idly moving feed belt, ofat delivering device embracing means for imparting to a thin WTnETWRMstream or sheet of crushed ore a velocity of motion approximately in thedirection of movementiof the belt which is the same or satin No.397,446. (1a tt);

relates to improvement-sin,

nearly the same as thevelocity of the belt, Under such conditions ofdelivery there will be no throwing oil of the particles of crushed orefrom' the belt and no vibratory motions imparted to the belttendingjto'tossthe ore lying upon its surface, as therewonld be it 'beltanda velocity of motion approximately to thatof the belt. Furthermore,the stream of 'crnshedere before it reaches the belt, is' spread sothat-the ore when delivered npon thebelt forms a thin layer ofapprcximately uniform depth.

It willreadily-b'e perceived that there are" a variety of waysin whichthe desired motion can'be'imparted to the crushed ore. It essential thatthe flattened nozzle from which the'crushed ore isdischarged shallterminate in a plane parallel. with and near the surface of the belt.The crushed ore be fed into a chute with which such nozzle connects and.may be driven out of the neziale by a Gillrent of'air of the requiredvelocity furnished by a suitableblower. It will usually be pre ferred,however, to connect the nozzle with the lower end or avertical chute orflattened tube, into the flaring upper end'or mouth of which the crushedore isfed and which is 'of ,velocity with which-the crushed ore is de-1livered, when. gravity is relied upon to give it its motion, may ifdesired,'-be. elfectively 1 regulated by making the instrumentality,

which supplies ore to thechute vertically ad justable or by deliveringthe crushed one into the flaring mouth" of the feed'chutefrom aninclined trough, into the upper part of which thecrushed ore is fed froma prescribed elevation and by means ofi which the speed of motion cf thecrushed oreatthe instant of its delivery into the feed chute, may bevaried The part of'the magnetic separator shown v so sufficient heightto enable the crnshed ore in in consider, is the carrying belt A whichis intended to be moved with great velocity in the direction of arrow 1for the purpose of carrying through the magnetic field of the apparatusathinly spread mass of crushed ore.

The devices for properly delivering the crushed ore embrace the curvednozzle 0 which is a flattened tube curved substantially as shown, so asto deliver its contents in a plane parallel with and-in close proximityto the surface of the carrying belt A. The nozzle 0 is connected to thelower end of the upright feed chute B; the upper end ol-which isprovided with a daring mouth B into which the crushed ore isfed by anysuitable means as for example by the slow moving feed belt E upon whicha layer of crushed ore of considerable thickness is deposited from thehopper F. A blower D may if desired, be connected with the feed chuteB,thefspout E of the blower being inline with the nozzle 6 as shown inFig. 1 for the purpose of forcing a currentcot' air through the nozzlewith such direction and such force as to drive the crushed ore out ofthe nozzle with the desired velocity. It will not be necessary to employa blower when the conditions under which the apparatus is to be used,are such that the feed chute B may be .made of such ascertained heightthat, the falling masso'f crushed ore will have time to acquirethe de-,'

gree of velocity necessary to enable it to, issue from the nozzle withthe same, or nearly the, same, speed as, that of the belt. 7 example, ifthe height of the Y surface of the slow moving belt- E, from whichthejore falls be f ur feetahev the e n zl ith fal ing ore will haveacquired a velocity of sixteen feet per secondfbefore it strikes thecurve of the nozzle. Assuming thatits Ye,-

locit'yis so'far diminished by impact with the curved nozzle astore'duce it to a speed'of say" eight feet per second, it'will thenissue from the nozzle with a velocity the same as that of a carryingbelttraveling at the rate of four hundred and eighty feet per minute, whichis an entirely practicable speed for this belt. By'impact witlrthecurved nozzle the mass of ore descending through the feed chute B willbe spread and delivered upon the carrying belt in a uniform layer, thethickness of v which can be controlled by increasing or decreasing thespeed of the feed belt E, or the quantity of crushed ore. dropped intothe flaring mouth B of the chute B; By increasing theheight of the feedchute, the speed at which the crushed ore is delivered from the nozzlewill be increased and vice versa, and the speed of the carrying beltmustbe changed accordingly; If it is desired from time to time to vary thevelocity with which the crushed ore is delivered, an expedient similarto that symbolically represented in Fig. 3, may be employed. Thus a slowmoving, belt E or other instrumentality from which Thus, for,

the ore is dropped, may be elevated above the nozzle, to a height whichis more than suilicient to enable the falling ore to acquire the desiredvelocity. The stream of ore delivered from the elevated feed belt E willin this case fall through the short tube E into the adjustable inclinedtrough G from the lower end of which it will be discharged into thatveloci y, Conne -fly; f it be desired to increase the velocity withwhich the oreis.

delivered from the. nozzle 0, the trough Ggwill be tilted into a moresteeply incliriedp'osb' tion, in which case the crushed ore willenterthe feedchute B with a greaterivelocity'cfl motion. inasmuch as, thespeed of movement with which the-crushed ore isde'livered from thenozzle G,resu1ts in part from the a velocity i acquires in fallingthrough-the ehuteB and in part from he velocity it sesses priorftoi'tsentrance into. said chute,

it will be perceived that the adjustableinclined trough ,G afiordsaconvenient means of ,efifectively varying the velocity with which urretiver d fr he zzl 0 as m be required in order to make'that velocitysubstantially the same as thelvelocity otthe' carrying belt A.

.1 What I claim as new, and desire measure by Letters Patent, isr '15 Incombination with a magnetic ore separator comprising the rapidly andslowly moving belts, one mounted above theo,ther,mechanismjsubst-antially s described foroperating said belts, ofa chute conveyingore'froin one'belt to the other, and a fan blowerconneeted to and adapted to deliver a current of air into said chutewhereby the velocity of the ore is increased, substantially asdescribed.

2. The combination with, an ore separator provided with rapidly andslowly moving belts one mounted above theother, of a chute B, having abent nozzle G 31; its delivery end,

and a fan blower D, providedwith an inclined spout E said spout beingconnected tothe chute in a line'with the nozzle 0, whereby the air fromthe fan is directed in the nozzle,v substantially as and for the purposeset forth,

' 3. In an ore separator, the combination with the belts A, E, onemounted above the other, mechanism, substantially as described, fordriving said belts, of a vertical chute B. intermediate. of the beltsand adapted. to deliver ore from one to the 0th,e r, a bout 'ozzlc C onthe dischargeend of they chute, the bend i of which is in the directionof the travel of IOC the belt, an air-blast connected to the chute Intestimony whereof I have hereunto set 1 v in a. line substantiallystraight with that of my hand in the presence of two subscribing thedelivery end thereof, and a connection witnesses.

GURDON OONKLING.

with the mechanism driving the belt with 5 that of the air-blast wherebythe latteris Witnesses:

driven therefrom, substantially as and for WM. CJHAUFF, the purpose setforth. 7 E. FQKASTENHUBER.

